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Online since: December 2013
Authors: Hong Ni, Ming Hui Li
The total industrial output value of four industries consisted of petrochemical industry, smelting industry, electric power engineering and cement industry accounts for about 50% of the total industrial output value of key enterprises.
It can be predicted that more than 60 million square meters of civil construction area needs to be constructed and more than 10 million square meters will be formulated to be the new missions about civil construction.
Therefore, Nanjing should strengthen the design of civil engineering construction drawing of building energy audit, may formulate specific implementation rules of "building energy efficiency audit", and audit the pass of building energy efficiency strictly.
We should establish civil building energy consumption information transmission and monitoring platform, in order to strengthen statistics and analysis and evaluation work for the civil building
Conclusions Nanjing new urbanization is a huge system engineering, it includes industrial structure, employment way, living environment, social security and other comprehensive urbanization.
It can be predicted that more than 60 million square meters of civil construction area needs to be constructed and more than 10 million square meters will be formulated to be the new missions about civil construction.
Therefore, Nanjing should strengthen the design of civil engineering construction drawing of building energy audit, may formulate specific implementation rules of "building energy efficiency audit", and audit the pass of building energy efficiency strictly.
We should establish civil building energy consumption information transmission and monitoring platform, in order to strengthen statistics and analysis and evaluation work for the civil building
Conclusions Nanjing new urbanization is a huge system engineering, it includes industrial structure, employment way, living environment, social security and other comprehensive urbanization.
Online since: December 2010
Authors: Xiong Zhang, Yong Juan Zhang, Ming Zhao
Resistance of Hydrated Cement Paste to Acid Attack
and Kinetics Analysis of Corrosion
Ming Zhao1,a, Xiong Zhang1,b and Yongjuan Zhang1,c
1Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education,
Tongji University, 4800 Cao An Rd., Shanghai, P.R.
Kinetics equation of acid corrosion was established in form of d=K·tn to predict HCP corrosion depth at specific age, which provides available references for durability analysis and engineering design of concrete structures.
Introduction Concrete plays an important role in civil engineering due to its advantages of low cost, ability to be cast and high durability, etc.
The main purpose of this work is to study the acid resistance of blended cement paste and establish corresponding degradation model as references for engineering design and durability evaluation of concrete structures.
In any case, it provides available references for durability analysis and engineering design.
Kinetics equation of acid corrosion was established in form of d=K·tn to predict HCP corrosion depth at specific age, which provides available references for durability analysis and engineering design of concrete structures.
Introduction Concrete plays an important role in civil engineering due to its advantages of low cost, ability to be cast and high durability, etc.
The main purpose of this work is to study the acid resistance of blended cement paste and establish corresponding degradation model as references for engineering design and durability evaluation of concrete structures.
In any case, it provides available references for durability analysis and engineering design.
Online since: October 2014
Authors: Wei Kong, Hong Liang Wang, Ying Cai
School of Civil Engineering and Architecture, Northeast Dianli University, Jilin 132012, P.R.China;
2.
Department of Civil Engineering and Architecture, Northeast Dianli University, Jilin 132012, P.R.China KEYWORDS: wind turbine tower; concrete filled double skin steel tubes; modal analysis; static strength analysis; resonate ABSTRACT: In order to save the steel consumption,ensure the better economy of wind turbine tower,this paper designeda new concrete filled double skin steel tube for wind turbine tower,based on the parameters of 1. 5 MW wind turbine tower.A three-dimensional finite element model of wind turbine tower was built by using the finite element software ANSYS,then the static strength analysis and modal analysis were carried out,in which the stress and displacement at the top of the tower were calculated under three kinds of working conditions: normal operation with rated wind speed,normal operation with cutout wind speed and shutdown under extreme wind conditions,the natural frequency and mode shapes of the tower were obtained as well.
The results show that the tower does not resonate with blades,and its structure can meet the strength and stiffness requirements of engineering. 0 The introduction With the energy crisis and environmental pollution problem is increasingly highlighted, more and more people begin to pay close attention to wind power[1].
So the design of tower column, should not only satisfy the engineering requirement, consider economy.
As shown in table 3 tower, 1 order natural frequency of the drum avoided the rotor rotating frequency and the oar frequency more than 10%, meet the engineering requirements.
Department of Civil Engineering and Architecture, Northeast Dianli University, Jilin 132012, P.R.China KEYWORDS: wind turbine tower; concrete filled double skin steel tubes; modal analysis; static strength analysis; resonate ABSTRACT: In order to save the steel consumption,ensure the better economy of wind turbine tower,this paper designeda new concrete filled double skin steel tube for wind turbine tower,based on the parameters of 1. 5 MW wind turbine tower.A three-dimensional finite element model of wind turbine tower was built by using the finite element software ANSYS,then the static strength analysis and modal analysis were carried out,in which the stress and displacement at the top of the tower were calculated under three kinds of working conditions: normal operation with rated wind speed,normal operation with cutout wind speed and shutdown under extreme wind conditions,the natural frequency and mode shapes of the tower were obtained as well.
The results show that the tower does not resonate with blades,and its structure can meet the strength and stiffness requirements of engineering. 0 The introduction With the energy crisis and environmental pollution problem is increasingly highlighted, more and more people begin to pay close attention to wind power[1].
So the design of tower column, should not only satisfy the engineering requirement, consider economy.
As shown in table 3 tower, 1 order natural frequency of the drum avoided the rotor rotating frequency and the oar frequency more than 10%, meet the engineering requirements.
Online since: December 2013
Authors: Yeong Huei Lee, Yee Ling Lee, Poi Ngian Shek, M.Md. Tahir, Tan Cher Siang, Shahrin Mohammad
Tahir 2,c,
Shahrin Mohammad1,d, Poi Ngian Shek2,e and Yee Ling Lee 1,f
1Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
2Construction Research Centre, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia.
A new proposal on connection stiffness prediction with influence of angle thickness for cold-formed steel top-seat flange cleat connection is presented to assist practicing engineers to design the cold-formed connection in light steel framing.
Eurocode prediction deviated from unity line and caused the problem of overestimation for connection stiffness which may lead to inadequacy in engineering design.
For future study, this investigation can be expanded to various sizes of structural members in order to compute a comprehensive and reliable design guides for practicing engineers in steel construction industry.
A new proposal on connection stiffness prediction with influence of angle thickness for cold-formed steel top-seat flange cleat connection is presented to assist practicing engineers to design the cold-formed connection in light steel framing.
Eurocode prediction deviated from unity line and caused the problem of overestimation for connection stiffness which may lead to inadequacy in engineering design.
For future study, this investigation can be expanded to various sizes of structural members in order to compute a comprehensive and reliable design guides for practicing engineers in steel construction industry.
Online since: November 2024
Authors: Stefanus Kristiawan, Ernawati Sri Sunarsih, Sholihin As'ad, Abdul Rahman Mohd.Sam
Sam3,c, Stefanus Adi Kristiawan2,d
1Department of Civil Engineering Education, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Surakarta, Indonesia
2Department of Civil Engineering, Universitas Sebelas Maret, Surakarta, Indonesia
3Associate Professor of Civil Engineering Structures and Materials, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia.
Geopolymer mortar workability test was carried out using a flow table test according to SNI 03-6825-2002: Testing Method for Compressive Strength of Portland Cement Mortar for Civil Works [14].
Geopolymer mortar workability test was carried out using a flow table test according to SNI 03-6825-2002: Testing Method for Compressive Strength of Portland Cement Mortar for Civil Works [14].
Online since: April 2014
Authors: He Ming Cheng, Xing Guo Hu
Truss Optimization Based on the Evolutionary Structural Optimization
Xingguo Hu 1, a, Heming Cheng 1,b
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China, 650500
akgtumuhxg@sina.com, b chenghm@public.km.yn.cn
Keywords: truss optimization; evolutionary structural optimization; stress ratio method; topology optimization
Abstract.
Engineering Computations, 2013, 30(1):p. 49~73 [4] Charles V.
Journal of Structural Engineering, 2005, 131(3):,p.369~379 [5] A.
Melbourne, Australia: Dept of Civil and Building Engineering, Victoria University of Technology, 1997 [13] Y.M.
Engineering Mechanics, 1999, 16(6),p. 70~81 [14] M.H.
Engineering Computations, 2013, 30(1):p. 49~73 [4] Charles V.
Journal of Structural Engineering, 2005, 131(3):,p.369~379 [5] A.
Melbourne, Australia: Dept of Civil and Building Engineering, Victoria University of Technology, 1997 [13] Y.M.
Engineering Mechanics, 1999, 16(6),p. 70~81 [14] M.H.
Online since: July 2014
Authors: Hai Ying Cao, Yun Fei Liu
Optimum Design of CFG Pile Compound Foundation Based on Numerical Simulation Method
Haiying Cao 1, a, Yunfei Liu 1,b
1School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, Hebei, 066004, China
achyysu79@126.com, b lyfysu@hotmail.com
Keywords: CFG pile compound foundation, numerical simulation, pile length, optimum design, subgrade deformation.
Introduction CFG pile is a common method of foundation treatment, and is applied in many real engineering [1, 2].
PLAXIS is a kind of large finite element software of geotechnical engineering for deformation and stability calculation.
References [1] Gang Zheng, Xiaonan Gong, Yongli Xie et.al: China Civil Engineering Journal. 45(2) (2012), p.127-1130, in Chinese
[5] Hongsheng Cheng, Wei Long: Highway Engineering, 35(2)(2010), P.74-80, in Chinese
Introduction CFG pile is a common method of foundation treatment, and is applied in many real engineering [1, 2].
PLAXIS is a kind of large finite element software of geotechnical engineering for deformation and stability calculation.
References [1] Gang Zheng, Xiaonan Gong, Yongli Xie et.al: China Civil Engineering Journal. 45(2) (2012), p.127-1130, in Chinese
[5] Hongsheng Cheng, Wei Long: Highway Engineering, 35(2)(2010), P.74-80, in Chinese
Online since: August 2013
Authors: Bi He, Chuan Li, De Li Li, Ying Na Li, Ya Ping Zhou
Seepage pressure is the pressure of pore fluid inside soil, which directly influences the stability state of engineering structure.
If seepage pressure changes, the change must directly affects to the stability of engineering structure such as transportation construction, water conservancy engineering, and other large-scale civil engineering.
At present, three kinds of seepage sensors are often used in safety monitoring of geotechnical engineering, piezometer tube class, gas pressure class, and electrical measuring class.
[4] Zhi Zhou, Jinpin Ou. in: Study on smart FBG sensors and their applications in civil engineering.
[9] Baiyuan Yang, Yitong Zhang. in: Engineering elasticity and plasticity.
If seepage pressure changes, the change must directly affects to the stability of engineering structure such as transportation construction, water conservancy engineering, and other large-scale civil engineering.
At present, three kinds of seepage sensors are often used in safety monitoring of geotechnical engineering, piezometer tube class, gas pressure class, and electrical measuring class.
[4] Zhi Zhou, Jinpin Ou. in: Study on smart FBG sensors and their applications in civil engineering.
[9] Baiyuan Yang, Yitong Zhang. in: Engineering elasticity and plasticity.
Online since: December 2014
Authors: Andrey Volkov, Vitaliy O. Chulkov, Dmitriy Korotkov
., 2,b,
Korotkov Dmitriy, PhD.3,c,
1,2,3 Moscow state university of civil engineering, 129337, Russia, Moscow, Yaroslavskoye shosse,26
avolkov@mgsu.ru, bvitolch@gmail.com, ckorotkov_DU@mail.ru
Keywords: infographics, infographic model, building life cycle.
This stage consists of the following cycles: ● geological engineering survey; ● engineering; ● building construction.
Stages of engineering cycle: 1.
Selection of engineering parameters; 3.
Razvitie modelej predmetnoj oblasti stroitel'noj sistemy v processe razrabotki informacionnoj podderzhki proektirovanija [Building system subject area development during the process of design–cals–system work out]. // Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. – 2011. – no 1. – Vol.1. – P. 352–357
This stage consists of the following cycles: ● geological engineering survey; ● engineering; ● building construction.
Stages of engineering cycle: 1.
Selection of engineering parameters; 3.
Razvitie modelej predmetnoj oblasti stroitel'noj sistemy v processe razrabotki informacionnoj podderzhki proektirovanija [Building system subject area development during the process of design–cals–system work out]. // Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. – 2011. – no 1. – Vol.1. – P. 352–357
Online since: October 2010
Authors: Anastasios Sextos, Kosmas Athanasios Stylianidis, Konstantinos Mykoniou
[3] ANSYS Engineering Analysis System (2005).
Journal of Bridge Engineering, ASCE, 13(2), 158-165
Earthquake Engineering and Structural Dynamics, 21: 713-740
Soil Dynamics and Earthquake Engineering, 22(4), 259271
Earthquake Engineering & Structural Dynamics, 32: 607629
Journal of Bridge Engineering, ASCE, 13(2), 158-165
Earthquake Engineering and Structural Dynamics, 21: 713-740
Soil Dynamics and Earthquake Engineering, 22(4), 259271
Earthquake Engineering & Structural Dynamics, 32: 607629